That's it for the live commentary today, thanks very much for joining me and be sure to look out for all the reaction from this game, and all the others, over the coming minutes and hours.

I'll be back on Monday with more live action from the Premier League, so be sure to join me in the evening for Swansea City vs. Liverpool. If you haven't had your fill of live action for today, Sam Tighe has commentary of Barcelona vs. Sevilla for you right now, which you can catch here.

Thanks again and see you next time!

So Chelsea are beaten under Mourinho for the first time this season, while Martinez remains unbeaten in charge of Everton in the league.

They go to six points, one behind Chelsea, and a fantastic and resolute defensive performance has helped them get there, as well as Naismith's goal of course.

Clive Brunskill/Getty Images

Full time

Everton 1 Chelsea 0

90+2'—Deulofeu finds Osman 20 yards from goal and he strikes it firmly, but well off target. Last seconds of injury time.

90+1'—Everton sub: Deulofeu on for Mirallas

89'—OFF THE BAR! Baines steps up to take a free kick and curls it over the wall....past Cech....and sees it crash up and over off the crossbar! So close to sealing the points.

88'—Everton sub: Naismith off, John Stones on

85'—Final five minutes of what has been a frantic second half. Can Chelsea find a goal? Can Everton hold on, or make one of their counter attacks count?

Scott Heavey/Getty Images

82'—Goodness me. David Luiz is shown a yellow card for turning and throwing Kevin Mirallas on the halfway line. A long way from goal but Mirallas is quick, nobody was catching up with him there. Yellow for the Chelsea man only.

81'—Into the final 10 minutes and Jose Mourinho looking extremely frustrated on the touchline. Not sure Torres has touched the ball yet.

Paul Thomas/Getty Images

78'—Chances at both ends! Eto'o tries to reach the ball ahead of Howard, fails, but the keeper then drops it. Everton scramble it clear and attack, and Barkley lets fly with a hammer shot which Cech has to beat away. 

Chris Brunskill/Getty Images

74'—McCarthy and Barkley combine brilliantly outside the box with the extra space they're being afforded, but Mikel eventually shuts them out. Eto'o runs at Coleman, but the full-back recovers well to win the challenge and concede a corner.

71'—Great attack from Everton after a Mirallas free kick is saved. They work in Coleman down the right and he attempts a cross, which Chelsea scramble behind. Suddenly pressure at the other end of the pitch.

68'—Ramires nips in at the near post to get to a cross from the right, but his stabbed shot goes into the side netting.

All-out-attack now for Chelsea: Substitution, Fernando Torres on for Ashley Cole

Everton sub: Jelavic off, James McCarthy on

65'—Frustration begins to show for the away side as Branislav Ivanovic is booked for a deliberate handball as he attempts to guide a corner toward goal.

62'—Still all Chelsea. Everton haven't been out of their half in about 10 minutes. Barkley tries to break forward but Mikel holds firm just shy of the halfway line.

59'—So Chelsea have around half an hour to find at least one goal, to avoid suffering their first defeat of the season. Everton are looking for their first win under Martinez.

Double Chelsea sub: Lampard and Oscar on, Schurrle and Mata off.

53'—Chelsea have certainly started the second half the stronger and Howard, though has not had any saves to make, is apprehensively pacing inside his six-yard box as his defence drop deeper and deeper.

49'—Chelsea mounting plenty of pressure early on in this second half. Mata and Schurrle are certainly trying to get extremely close to Eto'o, with the second line of attack not far behind.

46'—Schurrle is quickly in with a great chance for Chelsea, but although he evades Howard with his clipped shot, the ball bounces just wide of the near post.

Second half time!

Everton lead through Naismith. I'm nae kidding

— Gary Lineker (@GaryLineker) September 14, 2013

Leighton Baines completed 100% of his 22 passes in the first half #EFC #Everton

— EPL Stat Man (@EPLStatman) September 14, 2013

GIF: Steven Naismith fires Everton ahead v Chelsea http://t.co/rvETXJB8HX

— 101 Great Goals (@101greatgoals) September 14, 2013

Wow, what a finish. So, right on half time, Everton take the lead thanks to a close-range header from Naismith. A chipped cross to the far post was headed back across goal by Jelavic, leaving Cech stranded and Naismith to nod home from three yards. Possibly just about a deserved lead for Everton, and they lead at the break.